JPS5527433A - Producing device of electric welded steel tube - Google Patents
Producing device of electric welded steel tubeInfo
- Publication number
- JPS5527433A JPS5527433A JP9953478A JP9953478A JPS5527433A JP S5527433 A JPS5527433 A JP S5527433A JP 9953478 A JP9953478 A JP 9953478A JP 9953478 A JP9953478 A JP 9953478A JP S5527433 A JPS5527433 A JP S5527433A
- Authority
- JP
- Japan
- Prior art keywords
- rolls
- steel pipe
- welded
- producing device
- squeeze
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: The producing device of electric welded steel tube which comprises disposing shape-fluctuation-preventing rolls before and/or behind squeeze rolls and which reduces shape fluctuations of weld zone and is capable of performing stable welding.
CONSTITUTION: A work coil 3 is fitted onto the end part of the steel pipe 1 to be welded and the steel pipe is upset by a pair of squeeze rolls 2, 2 from the right and left and is advanced in the arrow direction. Next, idling rolls 4 are disposed before and/or behind the right and left squeeze rolls 2, 2 and the weld zone 1a of the steel pipe 1 is welded. Here, the respective rolls are born by two or more backup rolls 5, 5 from their back and the rolls 2 and rolls 4 are rotatably constituted while being restrained in the right and left directions and in the pipe making direction. Hence, the revolutions of all the rolls are of centerless type and this enables the rolls to be constituted to extremely small deameters, enables the distance between each roll to be reduced and permits highly efficient and stable welding.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9953478A JPS5948711B2 (en) | 1978-08-17 | 1978-08-17 | ERW steel pipe manufacturing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9953478A JPS5948711B2 (en) | 1978-08-17 | 1978-08-17 | ERW steel pipe manufacturing equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5527433A true JPS5527433A (en) | 1980-02-27 |
JPS5948711B2 JPS5948711B2 (en) | 1984-11-28 |
Family
ID=14249867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9953478A Expired JPS5948711B2 (en) | 1978-08-17 | 1978-08-17 | ERW steel pipe manufacturing equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5948711B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58184289A (en) * | 1982-04-22 | 1983-10-27 | 日立電線株式会社 | Resistor composition for self-temperature controllable heater |
-
1978
- 1978-08-17 JP JP9953478A patent/JPS5948711B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58184289A (en) * | 1982-04-22 | 1983-10-27 | 日立電線株式会社 | Resistor composition for self-temperature controllable heater |
Also Published As
Publication number | Publication date |
---|---|
JPS5948711B2 (en) | 1984-11-28 |
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